Neochamaejasmin B

Neochamaejasmin B

Common Name: Neochamaejasmin B

Synonyms:

CAS Registry Number: 90411-12-4

InChI:

InChIKey:

Formula: C30H22O10

Molecular Weight: 542.496

Exact Mass: 542.1213

NMR Solvent: CD3OD

MHz: not indicated

Calibration: TMS

NMR references: Niwa, M., Jiang, P., Hirata, Y. (1986). Two New C-3/C-3"-Biflavanones from Wikstroemia sikokiana. Chem. Pharm. Bull. 34, 3631-3634.

Niwa, M., Tatematsu, H., Liu, G., Hirata, Y. (1984). Isolation and Structures of Two New C-3/C-3"-Biflavanones, Neochamaejasmin A and Neochamaejasmin B. Chem. Lett. 539-542.

Species: not indicated - Niwa, M., Jiang, P., Hirata, Y. (1986). Two New C-3/C-3"-Biflavanones from Wikstroemia sikokiana. Chem. Pharm. Bull. 34, 3631-3634. Stellera chameajaseme - Niwa, M., Tatematsu, H., Liu, G., Hirata, Y. (1984). Isolation and Structures of Two New C-3/C-3"-Biflavanones, Neochamaejasmin A and Neochamaejasmin B. Chem. Lett. 539-542.

Notes:

Proton NMR Peaks

Position PPM Peak Type J (Hz)
2 (may be reversed with 2") 5.34 d 12
3 (may be reversed with 3") 3 d 4
6 (may be reversed with 6") 5.81 s
8 (may be reversed with 8") 5.95 s
3', 5' (may be reversed with 3''', 5''') range 6.6 complex
3', 5' (may be reversed with 3''', 5''') range 7.2 complex
2" (may be reversed with 2) 5.42 d 4
3" (may be reversed with 3) 3.28 d 12
6" (may be reversed with 6) 5.86 s
8" (may be reversed with 8) 6.02 s

Carbon NMR Peaks

Position PPM
2 81.3
3 49.4
4 196.1
5 164.9
6 97.1
7 167.9
8 96
9 (may be interchanged with 9") 163.2
10 (may be interchanged with 10") 103.7
1' 128.4
2' 128.9
3' 116.1
4' 158.3
5' 116.1
6' 128.9
2" 83.1
3" 50.8
4" 198.4
5" 165.2
6" 97.2
7" 168
8" 96.4
9" (may be interchanged with 9) 164.9
10" (may be interchanged with 10) 105.1
1''' 128.6
2''' 130.2
3''' 116.4
4''' 158.7
5''' 116.4
6''' 130.2